Needle-knife



J. HEDERICH.

NEEDLE KNIFE. APPUCATION F-ILED mm 12, 1920.

INVENTOR ATTORNEY PATENT OFFICE.

JOHN HEDERICH, OF TOLEDO, OREGON.

1\T EEDLE-KNIFE.

Specification of Letters Patent.

Patented Dec. 21, 1920.

Application filed March 12, 1920. Serial No. 365,252.

To all 10 7mm it may concern.

Be it known that I, JOHN Hnonnrorr, a citizen of the United States,residing at Toledo, in the county of Lincoln and State of Oregon, haveinvented a new and useful Tmprovement in Needlelinives, of which thefollowing is a specification.

My invention relates to self binders and particularly to the applicationof a cutting blade to the needle. whereby tangled grain, grass, andweeds will be out and thus prevent clogging the course of the needle.

The object of my invention is to provide a means which will preventclogging the course of the needle by the tangled grain and weeds whichare often encountered. This result I secure by mounting upon the needlea cutting blade, curved to correspond to the curvature of the needle,thus providing means whereby the movement of the needle will cause suchtangled material to be cut, so that it will not interfere with theproper functioning of the binding mechanism.

In the accompanying drawings I have shown my invention embodied in theform I prefer to use.

Figure 1 is a side view of a binder needle having my device attachedthereto.

Fig. 2 is an edge view of the same parts.

In operating grain binders when the grain is down or tangled, or whenthere is considerable amount of weeds or grass therein,

trouble is often caused by the accumulation of a tangled mass throughwhich the needle must penetrate. Also such tangled mass of stems causessuccessive bundles to be held together, by reason of the large number ofstems which are partly incorporated in successive bundles.

To remedy this trouble I provide the needle with a cutting blade whichwill act to out such tangled masses, thus clearing the course of theneedle and making certain the separation of the bundles.

In the drawings, 1 represents a needle such as is used upon one make ofself binders. This is typical of practically all successful binders.This needle oscillates upon a pivot 2. As shown in Fig. 1 it is in theposition occupied after it has penetrated through the grain which isbeing delivered to the binding mechanism and in the position occupiedwhen tying the knot. In such binders there is a bar or bars occupying ingeneral the position of the dotted lines 5, between which the needlepasses.

The cutting member consists of a thin steel plate 3 having its outeredge 30 curved to conform approximately to the curvature of the outeredge 11 of the needle, and provided with means whereby it may be securedto one side face of the needle. Such securing means should preferablypermit adjustment to vary the projection of the cutting edge beyond theneedle.

As illustrated, the forward end of the cutting blade is reduced to anarrow section 31 which will not overlap the inner edge of the point 13of the needle, and the tip of this section is laterally bent so as toenter the needle eye 12 and interlock with the needle. The blade alsohas holes, as 33, adapted to receive a clamping and securing bolt orscrew 34-. This will sufliciently hold the blade in place. By shiftingbetween the holes 33, the projection of the cutting edge 30 may bevaried. I

In use, the cutting edge 30 will sever the tangled masses so that theywill not interfere with the movement of the needle or the properfunctioning of the tying mechanism.

I claim as my invention 1. The combination with the needle of a grainbinder of a knife blade secured to one side of the needle and having anouter cutting edge approximately paralleling the outer edge of theneedle andmeans for adjusting the knife to vary the projection of saidcutting edge beyond the needle.

2. The combination with the needle of a grain binder of a knife bladehaving a cut.- ting edge approximately paralleling the outer edge of theneedle, the knife having a forward tip secured to the needle near itspoint and also having a plurality of openings for receiving a boltwhereby to secure it to the needle arm to thereby adjust the projectionof the cutting edgetbeyond the outer curve of the needle.

3. The combination with the needle of a grain binder, of a kniferemovably secured to the needle and having a continuous cutting edgeextending beyond the outermost edge of the needle and curved toapproximately parallel said outermost edge.

JOHN HEDERIOH.

